Abstract
A strictly anaerobic bacterium, designated as strain KGMB-
03357T, was isolated from the faeces of a healthy Korean selected
by Bundang Seoul National University based on health
status. Cells of strain KGMB03357T are Gram-stain-positive,
non-motile, non-spore-forming, and observed as straight or
curved rods. The isolate grew at 10–45°C (optimum temperature
of 40°C) and a pH range of 5.1–10.5 (optimum pH of
6.8). Analysis of phylogenetic trees based on the 16S rRNA
gene sequences revealed that strain KGMB03357T forms a
lineage within the genus Anaerotignum, and is most closely
related to Anaerotignum lactatifermentans G17T (= KCTC
15066T, 96.1%), Anaerotignum propionicum DSM 1682T (=
KCTC 5582T, 94.9%), Anaerotignum neopropionicum DSM
03847T (= KCTC 15564T, 94.9%), and Anaerotignum aminivorans
SH021T (= KCTC 15705T, 94.8%). The ANI values
between strain KGMB 03357T and members of the genus
Anaerotignum were 73.3–71.0%, which are below the ANI
criterion for interspecies identity. The DNA G + C content
based on the whole-genome sequence is 47.3 mol%. The major
cellular fatty acids of strain KGMB03357T are C16:0, C18:0,
C18:1 cis 9, and anteiso-C15:0. Strain KGMB03357T contains
meso-diaminopimelic acid as the diagnostic amino acid in
the cell wall peptidoglycan. Based on the phenotypic, phylogenetic,
and genomic properties, strain KGMB 03357T represents
a novel species of the genus Anaerotignum, for which
the name Anaerotignum faecicola sp. nov. is proposed. The
type strain is KGMB03357T (= KCTC 15736T = DSM 107953T).
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